FIELD: electrical engineering, in particular, communication channels using 0.38-10-35- 110 kV transmission lines without high-frequency filters. SUBSTANCE: device uses synchronous signal detection using integration, which start and end are determined by characteristic points, which are defined as moments of zero transition of total power supply voltage in stations for reception and transmission. EFFECT: increased stability to noise, increased speed of signal transmission up to 50-100 bits per second. 1 dwg
